Flight #: 6 AIRSPEED IN-FLIGHT ACCURACY CHECK |
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Pilot: |
Date: |
Time: |
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Objectives:
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Check |
Action |
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Determine altitudes at which you desire airspeed data. |
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DEPARTURE |
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Do not use flaps |
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Climb out at 110 MPH |
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Climb to 2000 MSL and level off |
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CRUISE |
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Limit prop RPM to 1700 |
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Check engine gauges especially CHT and Oil Temp |
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Trim hands off level flight |
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Set Mixture |
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NOTES
When you fly the three ground tracks for each power setting the IAS should be exactly the same. If not, make sure you're at the exact same altitude and just be patient --- sometimes it takes a few minutes for the airspeed to settle after a turn and a few burbbles.
Check |
Action |
1700 RPM, constant altitude - 5500 MSL |
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NOTES
Altitude: 5500 MSL
Throttle: 1700 RPM
360 |
180 |
90 |
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OAT |
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MAP |
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IAS |
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Ground Speed |
Check |
Action |
Set power 2000 RPM, constant altitude - 5500 MSL |
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NOTES
Altitude: 5500 MSL
Throttle: 2000 RPM
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90 |
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MAP |
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IAS |
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Ground Speed |
Check |
Action |
Set power 2400 RPM, constant altitude - 5500 MSL |
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NOTES
Altitude: 5500 MSL
Throttle: 2400 RPM
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120 |
240 |
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Manifold Pressure |
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IAS |
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Ground Speed |
Check |
Action |
Set power 2600 RPM, constant altitude - 5500 MSL |
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NOTES
Altitude: 5500 MSL
Throttle: 2600 RPM
360 |
120 |
240 |
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Manifold Pressure |
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IAS |
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Ground Speed |
Check |
Action |
POST FLIGHT |
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Prepare corrective action list |
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Record fuel and oil consumption |
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Calculate True Airspeeds using the attached Excel Spreadsheet (True Airspeed Calculator) |
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Update Aircraft Operations Manual |
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NOTES
By using the attached Excel Spreadsheet, your ground track does not have to be exactly on the cardinal heading. If it isn't, record the ground track you did have on the spreadsheet.
What you're testing is the accuracy of your airspeed indicator. Consider doing this test at close to stall speeds w/ & w/out flaps to get an idea of your TAS for stall speed.